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Top rated · Stats

vccaiji

Open on Codeforces · Unique solved

Rating2711· International Grandmaster

Bar charts count unique accepted problems (merged with the global problem set for rating and tags). Heatmaps use UTC calendar days. Rating squares are sums of newRating − oldRating from user.rating when System update time falls on that day. Submissions count every row from user.status (all verdicts), paginated until Codeforces has no more rows—heavy accounts can take a few seconds.

Rated contests
18
Unique solved
274
Submissions (all)
483
Years with activity
2021–2025

Solved by problem rating

Unique accepted problems, bucketed by catalog rating (100‑point bands). Unrated = no rating in the problem set.

  • Unrated1
  • 800–89937
  • 900–9995
  • 1000–10994
  • 1100–11998
  • 1200–12998
  • 1300–13998

Solved by topic

Each problem counts once per tag (same as Codeforces tags). Top tags shown; remaining mass in “Other”.

  • math130
  • greedy99
  • constructive algorithms82
  • dp70
  • brute force54
  • implementation52
  • data structures

Rating changes

2021

Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2021

Download PNG

Count of submissions per UTC day (includes every verdict).

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)51+662711
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)322-912645
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)79+322736
2025-09-24 14:50Codeforces Round 1053 (Div. 1)69+432704
2022-05-19 16:35Codeforces Round 792 (Div. 1 + Div. 2)
1400–1499
9
  • 1500–15994
  • 1600–169911
  • 1700–179912
  • 1800–18998
  • 1900–199911
  • 2000–209911
  • 2100–219917
  • 2200–229911
  • 2300–239910
  • 2400–249911
  • 2500–259920
  • 2600–269915
  • 2700–27998
  • 2800–28999
  • 2900–29994
  • 3000–30995
  • 3100–31996
  • 3200–329910
  • 3300–33993
  • 3400–34992
  • 3500–35996
  • 51
  • sortings40
  • bitmasks36
  • combinatorics34
  • binary search30
  • number theory28
  • dfs and similar26
  • graphs24
  • trees20
  • divide and conquer17
  • two pointers17
  • interactive15
  • strings15
  • fft15
  • probabilities11
  • games10
  • dsu9
  • hashing8
  • matrices7
  • geometry5
  • shortest paths5
  • string suffix structures3
  • Other (5 tags)9
  • Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2022

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2024

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2025

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 11/day in 2021)

    2022

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 20/day in 2022)

    2024

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 3/day in 2024)

    2025

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 12/day in 2025)

    54
    +78
    2661
    2022-05-08 16:35Codeforces Round 789 (Div. 1)68+682583
    2022-04-23 17:05Codeforces Global Round 20136+572515
    2022-04-19 16:35Codeforces Round 783 (Div. 1)26+2402458
    2022-03-24 16:35CodeTON Round 1 (Div. 1 + Div. 2, Rated, Prizes!)93+2082218
    2022-03-20 13:50Codeforces Round 778 (Div. 1 + Div. 2, based on Technocup 2022 Final Round)806+32010
    2022-02-23 12:10Codeforces Round 773 (Div. 1)643-212007
    2022-02-12 17:05Codeforces Global Round 19435+962028